Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary
Mathematical modeling of conjugate natural convection in a closed rectangular cavity with a radiant energy source in conditions of convective-radiative heat exchange at the external boundary was conducted. The radiant energy distribution was set by the Lambert’s law. Conduction and convection proces...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2016-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/201611001043 |
| _version_ | 1818618270390943744 |
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| author | Nee Alexander |
| author_facet | Nee Alexander |
| author_sort | Nee Alexander |
| collection | DOAJ |
| description | Mathematical modeling of conjugate natural convection in a closed rectangular cavity with a radiant energy source in conditions of convective-radiative heat exchange at the external boundary was conducted. The radiant energy distribution was set by the Lambert’s law. Conduction and convection processes analysis showed that the air masses flow pattern is modified slightly over the time. The temperature increases in the gas cavity, despite the heat removal from the one of the external boundary. According to the results of the integral heat transfer analysis were established that the average Nusselt number (Nuav) increasing occurs up to τ = 200 (dimensionless time). Further Nuav has changed insignificantly due to the temperature field equalization near the interfaces “gas – wall”. |
| first_indexed | 2024-12-16T17:18:55Z |
| format | Article |
| id | doaj.art-33e7b69e98bd461aa66021a18e90106a |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-16T17:18:55Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-33e7b69e98bd461aa66021a18e90106a2022-12-21T22:23:13ZengEDP SciencesEPJ Web of Conferences2100-014X2016-01-011100104310.1051/epjconf/201611001043epjconf_toet2016_01043Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External BoundaryNee Alexander0National Research Tomsk Polytechnic UniversityMathematical modeling of conjugate natural convection in a closed rectangular cavity with a radiant energy source in conditions of convective-radiative heat exchange at the external boundary was conducted. The radiant energy distribution was set by the Lambert’s law. Conduction and convection processes analysis showed that the air masses flow pattern is modified slightly over the time. The temperature increases in the gas cavity, despite the heat removal from the one of the external boundary. According to the results of the integral heat transfer analysis were established that the average Nusselt number (Nuav) increasing occurs up to τ = 200 (dimensionless time). Further Nuav has changed insignificantly due to the temperature field equalization near the interfaces “gas – wall”.http://dx.doi.org/10.1051/epjconf/201611001043 |
| spellingShingle | Nee Alexander Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary EPJ Web of Conferences |
| title | Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary |
| title_full | Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary |
| title_fullStr | Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary |
| title_full_unstemmed | Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary |
| title_short | Numerical Modeling of Conjugate Thermogravitational Convection in a Closed System with a Radiant Energy Source in Conditions of Convective-Radiative Heat Exchange at the External Boundary |
| title_sort | numerical modeling of conjugate thermogravitational convection in a closed system with a radiant energy source in conditions of convective radiative heat exchange at the external boundary |
| url | http://dx.doi.org/10.1051/epjconf/201611001043 |
| work_keys_str_mv | AT neealexander numericalmodelingofconjugatethermogravitationalconvectioninaclosedsystemwitharadiantenergysourceinconditionsofconvectiveradiativeheatexchangeattheexternalboundary |